5. Acquisition Method of Brain SPECT by Triangular SPECT System
نویسندگان
چکیده
منابع مشابه
Preoperative assessment of meningioma aggressiveness by Thallium-201 brain SPECT
Introduction: Meningioma is usually a benign brain tumor, but sometimes with aggressive course. The aim of this study was to assess the ability of 201Tl Brain SPECT to differentiate the pathologic grade of meningioma preoperatively. Methods: Thirty lesions in 28 patients were evaluated in this study. Early (20 minutes) and late (3 hours) brain SPECT images were performed and early u...
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OBJECTIVE We developed a modification of the acquisition zoom technique, referred to as differential magnification (DM), to improve the pixel resolution with fanbeam collimators. This study evaluated the effects of DM on brain SPECT image quality. METHODS SPECT imaging was performed using a triple-head camera with and without DM for a line source in air, Jaszczak and Hoffman phantoms, and 15 ...
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Objective: The aim of this study was to evaluate the influences of reconstruction and attenuation correction on the differences in the radioactivity distributions in 123I brain SPECT obtained by the hybrid SPECT/CT device. Methods: We used the 3-dimensional (3D) brain phantom, which imitates the precise structure of gray mater, white matter and bone regions. It was filled with 123I solution (20...
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Background: Single-photon emission computed tomography (SPECT) imaging is an important diagnostic tool for the early detection of the loss of nigrostriatal dopaminergic neurons in Parkinson’s disease (PD) and similar neurodegenerative disorders. Visualization and quantification of dopamine transporter (DAT) binding in the striatum is an established diagnostic tool to detect nigrostriatal dopami...
متن کاملpreoperative assessment of meningioma aggressiveness by thallium-201 brain spect
introduction: meningioma is usually a benign brain tumor, but sometimes with aggressive course. the aim of this study was to assess the ability of 201tl brain spect to differentiate the pathologic grade of meningioma preoperatively. methods: thirty lesions in 28 patients were evaluated in this study. early (20 minutes) and late (3 hours) brain spect images were performed and early uptake ratio...
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ژورنال
عنوان ژورنال: Japanese Journal of Radiological Technology
سال: 1992
ISSN: 0369-4305,1881-4883
DOI: 10.6009/jjrt.kj00003500402